Oh, it doesn’t require any tech knowledge.
Just visit the LingQ Addon and click the “install the script” button.
Also, since the chat widget is working with the Gemini API, you don’t need to move between LingQ and Gemini tabs. Just ask anything you want in the widget. This is how to get your API key tutorial [UPDATED] Customizable LingQ Reader + Add-ons - #96 by vet8t6z79pc4.
I also studied in the same way as you, but to reduce overhead, I developed the add-on.